ICD-10-CM category
Z03 Medical observation and evaluation for suspected diseases and conditions, ruled out
Z03 is a category, not a billable code. Report one of the 14 complete codes below.
Codes in Z03
- Z03.6Encounter for observation for suspected toxic effect from ingested substance ruled out
- Z03.71Encounter for suspected problem with amniotic cavity and membrane ruled out
- Z03.72Encounter for suspected placental problem ruled out
- Z03.73Encounter for suspected fetal anomaly ruled out
- Z03.74Encounter for suspected problem with fetal growth ruled out
- Z03.75Encounter for suspected cervical shortening ruled out
- Z03.79Encounter for other suspected maternal and fetal conditions ruled out
- Z03.810Encounter for observation for suspected exposure to anthrax ruled out
- Z03.818Encounter for observation for suspected exposure to other biological agents ruled out
- Z03.821Encounter for observation for suspected ingested foreign body ruled out
- Z03.822Encounter for observation for suspected aspirated (inhaled) foreign body ruled out
- Z03.823Encounter for observation for suspected inserted (injected) foreign body ruled out
- Z03.83Encounter for observation for suspected conditions related to home physiologic monitoring device ruled out
- Z03.89Encounter for observation for other suspected diseases and conditions ruled out
Outside the US? Z03 in the international WHO ICD-10 lists its inclusion and exclusion notes.
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ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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